HTMS Chang Wreck
Best time to dive
November to May; June to September
What you might see
- BarracudaLikely
- Eagle rayLikely
- FrogfishLikely
- Moray eelLikely
- NudibranchLikely
- Sea turtlePossible
- SeahorseLikely
- Whale sharkPossible
Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.
Certification & difficulty
Technical - advanced conditions (currents/depth); dive within your training.
Snorkelling
Not a snorkel site - Not possible - wreck's shallowest structure starts around 12 m
Safety notes
Overhead-environment risks inside cargo holds/superstructure (silt-out, entanglement, disorientation) - full interior penetration requires specific wreck certification; depth to 30 m limits no-decompression time; some current exposure on ascent/descent line
Permits & fees
May fall within Koh Rang/Mu Ko Chang marine park fee zone depending on operator's routing; NP diving fee ~400 THB/adult diver can apply - confirm with operator
Permits and operators change - confirm before booking.
Location
Nearest hub: Koh Chang (Bang Bao)
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.

